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首页> 外文期刊>International Journal of Space Science and Engineering >Relative navigation to non-cooperative targets in LEO: achievable accuracy from radar tracking measurements
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Relative navigation to non-cooperative targets in LEO: achievable accuracy from radar tracking measurements

机译：相对导航到LEO中的非合作目标：雷达跟踪测量可实现的精度

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摘要

Any future space debris removal or on-orbit servicing mission faces the problem of the initial relative orbit determination of the servicing satellite to the non-cooperative target. In this work, we analyse the relative navigation accuracy that can be achieved in low Earth orbit, by using ground-based orbit determination from radar tracking measurements for the target, and classical GPS-based orbit determination for the servicing satellite. The analysis is based on the radar tracking measurements obtained from a 10 × 10 × 34 cm small object at an altitude of 635 km. The results show that the relative orbit can be determined with accuracy down to 2 m (RMS) in the semi-major axis, and down to 20 m (RMS) in both the radial and normal separations. From the results, we derive requirements on radar-tracking campaigns.
机译：任何未来的空间碎片清除或在轨维修任务都将面临维修卫星与非合作目标最初相对轨道确定的问题。在这项工作中，我们通过使用目标雷达跟踪测量中的地面轨道确定以及服务卫星的经典GPS轨道确定，分析了在低地球轨道中可以实现的相对导航精度。该分析基于从635 km高度的10×10×34 cm小物体获得的雷达跟踪测量结果。结果表明，相对轨道可以在半长轴上精确到2 m（RMS），在径向和法向分离上精确到20 m（RMS）。从结果中，我们得出对雷达跟踪活动的要求。

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  • 作者

    Ralph Kahle; Martin Weigel; Michael Kirschner; Sofya Spiridonova; Erin Kahr; Klemens Letsch;

  • 作者单位

    German Aerospace Center (DLR), German Space Operations Center (GSOC), Oberpfaffenhofen, 82234 Wessling, Germany;

    German Aerospace Center (DLR), German Space Operations Center (GSOC), Oberpfaffenhofen, 82234 Wessling, Germany;

    German Aerospace Center (DLR), German Space Operations Center (GSOC), Oberpfaffenhofen, 82234 Wessling, Germany;

    German Aerospace Center (DLR), German Space Operations Center (GSOC), Oberpfaffenhofen, 82234 Wessling, Germany;

    Department of Geomatics Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive NW, T2N 1N4, Canada;

    Fraunhofer Research Institute for High Frequency Physics and Radar Techniques (FHR), Fraunhoferstr. 20, 53343 Wachtberg, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    relative navigation; radar tracking; on-orbit servicing; space debris removal;

    机译：相对导航;雷达跟踪;在轨维修;清除空间碎片;

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